首页> 外国专利> METHOD FOR REGENERATION OF CATALYSTS USED TO OBTAIN POLYSULFIDE COOKING SOLUTIONS

METHOD FOR REGENERATION OF CATALYSTS USED TO OBTAIN POLYSULFIDE COOKING SOLUTIONS

机译:获得多硫化物烹​​饪溶液的催化剂的再生方法

摘要

A method of regenerating an activated carbon catalyst which is used in the production of polysulphide liquor. In the method, the catalyst is washed with a washing liquid in order to remove the sediment accumulated in the catalyst. According to the present invention, in this case, the activated carbon catalyst is regenerated most suitably by bringing it to a multi-stage washing which comprises at least one washing step in which the washing liquid used comprises sodium sulphide, and one washing step in which acidic washing liquid is used. The sulphur precipitate is peeled off using sodium sulphide, and the iron and other metals can be effectively removed by using an acidic washing, without damaging the catalyst.
机译:一种用于生产多硫化物液体的再生活性炭催化剂的方法。在该方法中,用洗涤液洗涤催化剂,以除去积累在催化剂中的沉淀物。根据本发明,在这种情况下,通过将活性炭催化剂进行多步洗涤来最合适地再生,该多步洗涤包括至少一个洗涤步骤,其中所用的洗涤液包括硫化钠,和一个洗涤步骤,其中使用酸性洗涤液。使用硫化钠将硫沉淀物剥离,并且可以通过使用酸性洗涤有效除去铁和其他金属,而不会损坏催化剂。

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